MAX9924
Variable-Reluctance Sensor Interface with Differential Input and Adaptive Peak Threshold
Industry's First Single-Chip Solution for Variable-Reluctance Sensor Interface and Adaptive Peak Threshold
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Key Features
Applications/Uses
| Sensor Interface Type | Variable Reluctance |
| # Channels | 1 |
| VSUPPLY (V) (min) | 4.5 |
| VSUPPLY (V) (max) | 5.5 |
| ISUPPLY (µA) (typ) | 2600 |
| Low Power Shutdown | No |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | UMAX/10 |
| Budgetary Price (See Notes) | 3.15 |
Simplified Block Diagram
Technical Docs
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Sampling:
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Parameters
| Sensor Interface Type | Variable Reluctance |
| # Channels | 1 |
| VSUPPLY (V) (min) | 4.5 |
| VSUPPLY (V) (max) | 5.5 |
| ISUPPLY (µA) (typ) | 2600 |
| Low Power Shutdown | No |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | UMAX/10 |
| Budgetary Price (See Notes) | 3.15 |
Key Features
- Differential Input Stage Provides Enhanced Noise Immunity
- Precision Amplifier and Comparator Allows Small-Signal Detection
- User-Enabled Internal Adaptive Peak Threshold or Flexible External Threshold
- Zero-Crossing Detection Provides Accurate Phase Information
Applications/Uses
- Camshaft VRS Interfaces
- Crankshaft VRS Interfaces
- Vehicle Speed VRS Interfaces
Description
The MAX9926/MAX9927 are dual versions of the MAX9924/MAX9925, respectively. The MAX9924/MAX9926 combine matched resistors with a CMOS input precision operational amplifier to give high CMRR over a wide range of input frequencies and temperatures. The MAX9924/MAX9926 differential amplifiers provide a fixed gain of 1V/V. The MAX9925/MAX9927 make all three terminals of the internal operational amplifier available, allowing greater flexibility for gain. The MAX9926 also provides a direction output that is useful for quadrature-connected VR sensors that are used in certain high-performance engines. These devices interface with both new-generation differential VR sensors as well as legacy single-ended VR sensors.
The MAX9924/MAX9925 are available in the 10-pin µMAX® package, while the MAX9926/MAX9927 are available in the 16-pin QSOP package. All devices are specified over the -40°C to +125°C automotive temperature range.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
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